/* ============================================
   STUDY PARTNER — Hero Section
   ============================================ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  overflow: hidden;
}

/* ── Background Mesh ── */
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
}

.hero__bg-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  animation: blobFloat 20s ease-in-out infinite;
}

.hero__bg-blob--1 {
  width: 500px;
  height: 500px;
  background: var(--clr-accent);
  top: -10%;
  right: -5%;
  opacity: 0.15;
}

.hero__bg-blob--2 {
  width: 400px;
  height: 400px;
  background: var(--clr-sage);
  bottom: -10%;
  left: -5%;
  opacity: 0.12;
  animation-delay: -7s;
}

.hero__bg-blob--3 {
  width: 300px;
  height: 300px;
  background: var(--clr-coral);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0.08;
  animation-delay: -13s;
}

@keyframes blobFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%      { transform: translate(30px, -30px) scale(1.05); }
  66%      { transform: translate(-20px, 20px) scale(0.95); }
}

/* ── Content ── */
.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-16);
  align-items: center;
}

.hero__content {
  max-width: 560px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  background: var(--clr-white);
  padding: var(--sp-2) var(--sp-4);
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--clr-sage-dark);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--sp-8);
  border: 1px solid var(--clr-border);
}

.hero__badge-dot {
  width: 8px;
  height: 8px;
  background: var(--clr-success);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.5; transform: scale(0.8); }
}

.hero__title {
  font-size: clamp(2.2rem, 5vw, 3.75rem);
  font-weight: var(--fw-black);
  line-height: 1.1;
  margin-bottom: var(--sp-6);
  letter-spacing: -0.03em;
}

.hero__title-accent {
  color: var(--clr-accent-dark);
  position: relative;
}

.hero__title-accent::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0;
  right: 0;
  height: 8px;
  background: var(--clr-accent);
  opacity: 0.3;
  border-radius: var(--radius-full);
  z-index: -1;
}

.hero__description {
  font-size: var(--fs-md);
  color: var(--clr-text-light);
  margin-bottom: var(--sp-10);
  max-width: 480px;
  line-height: var(--lh-relaxed);
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  flex-wrap: wrap;
}

.hero__play-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--clr-text-light);
  transition: color var(--dur-fast) var(--ease-out);
}

.hero__play-btn:hover {
  color: var(--clr-primary);
}

.hero__play-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--clr-white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  transition: all var(--dur-normal) var(--ease-out);
}

.hero__play-btn:hover .hero__play-icon {
  box-shadow: var(--shadow-lg);
  transform: scale(1.08);
}

.hero__play-icon svg {
  width: 16px;
  height: 16px;
  margin-left: 2px;
  color: var(--clr-primary);
}

/* ── Visual Cards ── */
.hero__visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 480px;
}

.hero__card {
  position: absolute;
  background: var(--clr-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: var(--sp-5);
  transition: transform var(--dur-slow) var(--ease-out);
}

.hero__card--main {
  position: relative;
  width: 320px;
  padding: var(--sp-8);
  z-index: 2;
}

.hero__card--main-header {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-5);
}

.hero__card--main-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--clr-sage), var(--clr-sage-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-white);
  font-weight: var(--fw-bold);
  font-size: var(--fs-sm);
}

.hero__card--main-info h4 {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--clr-primary);
}

.hero__card--main-info span {
  font-size: var(--fs-xs);
  color: var(--clr-text-muted);
}

.hero__card--main-subjects {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-bottom: var(--sp-5);
}

.hero__card--main-tag {
  padding: var(--sp-1) var(--sp-3);
  background: var(--clr-cream);
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  color: var(--clr-text-light);
}

.hero__card--main-bar {
  height: 6px;
  background: var(--clr-cream-dark);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.hero__card--main-progress {
  height: 100%;
  width: 72%;
  background: linear-gradient(90deg, var(--clr-accent), var(--clr-accent-light));
  border-radius: var(--radius-full);
  animation: progressGrow 2s var(--ease-out) forwards;
}

@keyframes progressGrow {
  from { width: 0; }
  to   { width: 72%; }
}

.hero__card--float-1 {
  top: 20px;
  right: -20px;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  animation: floatCard 6s ease-in-out infinite;
}

.hero__card--float-1-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--clr-coral), var(--clr-coral-light));
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero__card--float-1-icon svg {
  width: 20px;
  height: 20px;
  color: var(--clr-white);
}

.hero__card--float-1 span {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--clr-primary);
}

.hero__card--float-2 {
  bottom: 40px;
  left: -20px;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  animation: floatCard 6s ease-in-out infinite;
  animation-delay: -3s;
}

.hero__card--float-2-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--clr-sage), var(--clr-sage-light));
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero__card--float-2-icon svg {
  width: 20px;
  height: 20px;
  color: var(--clr-white);
}

.hero__card--float-2-text strong {
  display: block;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--clr-primary);
}

.hero__card--float-2-text span {
  font-size: var(--fs-xs);
  color: var(--clr-text-muted);
}

@keyframes floatCard {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-12px); }
}

/* ── Stats Bar ── */
.stats {
  padding: var(--sp-12) 0;
  background: var(--clr-white);
  border-top: 1px solid var(--clr-border);
  border-bottom: 1px solid var(--clr-border);
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-8);
  text-align: center;
}

.stats__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-2);
}

.stats__number {
  font-family: var(--ff-heading);
  font-size: var(--fs-3xl);
  font-weight: var(--fw-black);
  color: var(--clr-primary);
  letter-spacing: var(--ls-tight);
}

.stats__number span {
  color: var(--clr-accent);
}

.stats__label {
  font-size: var(--fs-sm);
  color: var(--clr-text-muted);
  font-weight: var(--fw-medium);
}

/* ── Responsive ── */
@media (max-width: 1199px) {
  .hero__visual {
    min-height: 400px;
  }

  .hero__card--main {
    width: 280px;
    padding: var(--sp-6);
  }
}

@media (max-width: 991px) {
  .hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--sp-12);
  }

  .hero__content {
    max-width: 100%;
  }

  .hero__description {
    max-width: 100%;
    margin: 0 auto var(--sp-10);
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__visual {
    min-height: 350px;
  }

  .hero__card--float-1 {
    right: 20px;
  }

  .hero__card--float-2 {
    left: 20px;
  }
}

@media (max-width: 767px) {
  .hero {
    min-height: auto;
    padding-top: calc(var(--nav-height) + var(--sp-10));
    padding-bottom: var(--sp-12);
  }

  .hero__visual {
    min-height: 300px;
  }

  .hero__card--main {
    width: 260px;
    padding: var(--sp-5);
  }

  .hero__card--float-1,
  .hero__card--float-2 {
    padding: var(--sp-3);
  }

  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--sp-6);
  }
}